Библиотека института физики им. Л.В. Киренского СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Su B., Song G., Molokeev M. S., Lin Z., Xia Z.
Заглавие : Synthesis, crystal structure and green luminescence in zero-dimensional tin halide (C8H14N2)2SnBr6
Место публикации : Inorg. Chem. - 2020. - Vol. 59, Is. 14. - P.9962–9968. - ISSN 00201669 (ISSN), DOI 10.1021/acs.inorgchem.0c01103
Примечания : Cited References: 33. - This work is supported by the National Natural Science Foundation of China (51961145101, 51722202, and 51972118), Fundamental Research Funds for the Central Universities (D2190980), Guangzhou Science & Technology Project (202007020005), and the Guangdong Provincial Science & Technology Project (No. 2018A050506004), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137). This work is also funded by RFBR according to Research Project No. 19-52-80003
Аннотация: Organic-inorganic hybrid metal halides with broad-band emission are currently receiving an increasing interest for their unique light emission properties. Here we report a novel lead-free zero-dimensional (0D) tin halide, (C8H14N2)2SnBr6, in which isolated [SnBr6]4- octahedrons are cocrystallized with organic cations, 1,3-bis(aminomethyl)benzene (C8H14N22+). Upon photoexcitation, the bulk crystals exhibit broad-band green emission peaking at 507 nm with a full width at half-maximum (fwhm) of 82 nm (0.395 eV), a Stokes shift of 157 nm (1.09 eV), and a photoluminescence quantum yield (PLQY) of 36 ± 4%. Combined structural analysis and density functional theory (DFT) calculations indicate that the excited state structural distortion of [SnBr6]4- octahedral units account for the formation of this green emission. The relatively small Stokes shift and narrow fwhm of the emission are hence caused by the reduced distortion of [SnBr6]4- octahedrons and rigid molecular structure. The discovery of lead-free (C8H14N2)2SnBr6 and insight into the mechanism of green emission provide an essential platform toward unveiling the relationship between structure and property for 0D metal halide perovskites.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Baron F. A., Volochaev M. N., Lukyanenko A. V., Mikhlin Yu. L., Molokeev M. S., Rautskii M. V., Smolyarova T. E., Shanidze L. V., Tarasov A. S.
Заглавие : Effect of the forming gas ALD chamber preconditioning on the physical properties of TiN1-xOx films
Коллективы : International Online Workshop on the properties of Functional MAX-materials, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : 1st FunMAX Workshop 2020: Book of Abstracts/ , Ин-т физики им. Л.В. Киренского. - 2020. - P15
Примечания : Cited References: 1
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gokhfeld D. M., Popkov S. I., Bykov A. A.
Заглавие : Analog of the intertype superconductivity in nanostructured materials
Место публикации : Physica C. - 2019. - Vol. 566. - Ст.1353526. - ISSN 09214534 (ISSN), DOI 10.1016/j.physc.2019.1353526
Примечания : Cited References: 21. - The authors are grateful to D.A. Balaev, N.E. Savitskaya, N.A. Grigorieva for fruitful discussions and to A.A. Mistonov for provided samples. The work is supported by the Russian Science Foundation (project no. 17-72-10067 ).
Аннотация: Magnetization hysteresis loops of tin samples with an inverted opal structure are presented. The sample formed by tin particles with the size of 70 and 128 nm is found to be a type-I superconductor. The tin sample formed by 80 and 42 nm particles demonstrates an analog of intertype superconductivity: features of both type-I and II superconductors are observed on the magnetization isothermal curves. A behavior of the irreversible and reversible magnetizations supports coexistence of type-I and II superconducting nanoparticles in this sample.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bikbaev R. G., Vetrov S. Ya., Timofeev I. V.
Заглавие : Transparent conductive oxides for the epsilon-near-zero Tamm plasmon polaritons
Место публикации : J. Opt. Soc. Am. B. - 2019. - Vol. 36, Is. 10. - P.2817-2823. - ISSN 07403224 (ISSN), DOI 10.1364/JOSAB.36.002817
Примечания : Cited References: 44. - The reported study was funded by RFBR according to the research project No 18-32-00053 and financial support RFBR and MOST according to the research project No 19-52-52006.
Аннотация: We demonstrate the possibility of using transparent conducting oxides [aluminum-doped zinc oxide (AZO), gallium-doped zinc oxide (GZO), indium tin oxide (ITO)] to form Tamm plasmon polaritons in the near-infrared spectral range where the permittivity of oxides is near zero. The spectral properties of the structures are investigated in the framework of the temporal coupled-mode theory and confirmed by the transfer matrix method. It is found that in the critical coupling conditions, the maximal Q-factor of a Tamm plasmon polariton is achieved when a photonic crystal is conjugated with the AZO film, while at the conjugation with the ITO films, the broadest spectral line is obtained. The sensitivity of the wavelength and spectral width of the Tamm plasmon polariton to changes in the oxide film thickness, bulk concentration of a dopant, and angle of incidence is demonstrated.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Baron F. A., Volochaev M. N., Lukyanenko A. V., Mikhlin Yu. L., Molokeev M. S., Rautskii M. V., Smolyarova T. E., Shanidze L. V., Tarasov A. S.
Заглавие : Effect of the forming gas ALD chamber preconditioning on the physical properties of TiN1-xOx films
Коллективы : International workshop on functional MAX-materials, Kirensky Institute of Physics
Место публикации : International workshop on functional MAX-materials (1st FunMax). - 2020. - P.15
Примечания : Cited references: 1
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deng, Chenkai, Hao, Shiqiang, Liu, Kunjie, Molokeev M. S., Wolverton, Christopher, Fan, Liubing, Zhou, Guojun, Chen, D.a., Zhao, Jing, Liu, Quanlin
Заглавие : Broadband light emitting zero-dimensional antimony and bismuth-based hybrid halides with diverse structures
Коллективы : Beijing Municipal Natural Science FoundationBeijing Natural Science Foundation [2182080]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51972021, 51702329]; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [FRF-IDRY-19-005]; RFBRRussian Foundation for Basic Research (RFBR) [19-52-80003]; Department of Energy, Office of Science Basic Energy SciencesUnited States Department of Energy (DOE) [DE-SC0014520]
Место публикации : J. Mater. Chem. C. - 2021. - Vol. 9, Is. 44. - P.15942-15948. - ISSN 2050-7526, DOI 10.1039/d1tc04198c. - ISSN 2050-7534(eISSN)
Примечания : Cited References: 52. - This work was supported by Beijing Municipal Natural Science Foundation (2182080) and the National Natural Science Foundation of China (51972021 and 51702329). The work was partly supported by the Fundamental Research Funds for the Central Universities (FRF-IDRY-19-005) and by the RFBR according to the research project No. 19-52-80003. S. H. and C. W. (DFT calculations) acknowledge support from the Department of Energy, Office of Science Basic Energy Sciences under Grant DE-SC0014520. Access to QUEST, the supercomputing resources facilities at Northwestern University, is also acknowledged
Предметные рубрики: CRYSTAL-STRUCTURE
LONE-PAIR
EMISSION
PEROVSKITES
TIN
LUMINESCENCE
Аннотация: Low-dimensional organic–inorganic metal halides have recently attracted extensive attention because of their various structures and distinguished photoelectric properties. Herein, we report a series of new zero-dimensional organic–inorganic hybrid metal halides: (TMEDA)3Bi2Cl12·H2O, (TMEDA)3Bi2Br12·H2O, (TMEDA)3Sb2Br12·H2O, and (TMEDA)5Sb6Cl28·2H2O [TMEDA = N,N,N′·trimethylethylenediamine]. (TMEDA)3M2X12·H2O (M = Bi or Sb, X = Cl or Br) crystallizes in the monoclinic space group P21/n, and (TMEDA)5Sb6Cl28·2H2O crystallizes in the orthorhombic space group Pnma. (TMEDA)3M2X12 possesses a zero-dimensional structure with the metal halide ions of [MBr6]3− isolated by the organic TMEDA2+ cations. Interestingly, the (TMEDA)5Sb6Cl28·2H2O structure consists of a combination of corner-connected octahedra [Sb4Cl18]6− and edge-shared [Sb2Cl10]4−, which is quite rare. The light emission of all these compounds was measured, and (TMEDA)3Sb2Br12·H2O exhibits the most intense luminescence. Upon 400 nm ultraviolet light excitation, (TMEDA)3Sb2Br12·H2O exhibited strong broadband yellow emission centered at 625 nm with a full-width at half-maximum of ∼150 nm originating from self-trapped excitons. This work suggests the possibility of new types of hybrid halides by introducing different metal centers and probing the structural evolution and photoluminescent properties, serving as a reference for the relationship between structure and luminescent performance and demonstrating their potential use as phosphors in light-emitting diodes.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Molokeev M. S., Su, Binbin, Aleksandrovsky A. S., Golovnev, Nicolay N., Plyaskin M. E., Xia, Zhiguo
Заглавие : Machine learning analysis and discovery of zero-dimensional ns2 metal halides toward enhanced photoluminescence quantum yield
Место публикации : Chem. Mat. - 2022. - Vol. 34, Is. 2. - P.537-546. - ISSN 0897-4756, DOI 10.1021/acs.chemmater.1c02725. - ISSN 1520-5002(eISSN)
Примечания : Cited References: 66. - This work is supported by the National Natural Science Foundation of China (51961145101 and 51972118), International Cooperation Project of National Key Research and Development Program of China (2021YFE0105700), Guangzhou Science and Technology Project (202007020005), and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01X137). This work is also funded by RFBR according to the research project no. 19-52-80003
Предметные рубрики: RANDOM FOREST
CRYSTAL-STRUCTURE
TIN BROMIDE
CLASSIFICATION
Аннотация: The dependence of photoluminescence quantum yield (PLQY) on the crystal structure of existing zero-dimensional ns2 metal halides is analyzed with the help of principal component analysis and random forest methods. The primary role of the distance between metal ions in different compounds is revealed, and the influence of other structural features such as metal-halogen distance and the distortion of metal-halogen polyhedrons are quantified. Accordingly, the two previously unknown Sb3+-based zero-dimensional metal halides were synthesized to verify the obtained model. Experimental studies of the two compounds demonstrated good agreement with the predictions, and the PLQY of (C10H16N)2SbCl5 is found to be 96.5%. Via machine learning analysis, we demonstrate that concentration quenching is the main factor that determines PLQY for all s2 ion metal halides, which will accelerate the discovery of new luminescence metal halides.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Фадеева Н. П., Сайкова С. В., Пикурова Е. В., Воронин А. С., Фадеев Ю. В., Самойло А. С., Тамбасов, Игорь Анатольевич
Заглавие : Новый метод получения прозрачных проводящих пленок оксида индия (III) и оксида индия-олова
Место публикации : Журн. СФУ. Химия. - 2021. - Т. 14, № 1. - С. 45-58. - ISSN 1998-2836, DOI 10.17516/1998-2836-0215; J. Sib. Fed. Univ. Chem. - ISSN 2313-6049(eISSN)
Примечания : Библиогр.: 36. - Работа выполнена при поддержке РФФИ (грант № 18-33-00504) и стипендии Президента Российской Федерации (СП-2235.2019.1). В работе использованы приборы ЦКП СФУ и Красноярского регионального центра коллективного пользования ФИЦ КНЦ СО РАН
Предметные рубрики: ITO THIN-FILMS
ELECTRICAL-PROPERTIES
DEPOSITION
Аннотация: В работе получены седиментационно устойчивые золи гидроксидов индия (III) и олова (IV) методом анионообменного синтеза, заключающимся в обменной реакции между ОН‑ионами анионообменной смолы и анионами металлосодержащих растворов. Синтезированные гидрозоли использованы для получения проводящих пленок оксида индия (III) In2O3 и оксида индия, легированного оловом In2O3:Sn, с поверхностным сопротивлением 4 кОм/кв, толщинами 200–500 нм и прозрачностью более 85 %. Подобраны режимы нанесения прекурсоров на стеклянные подложки модифицированным спрей-методом и методом центрифугирования. Пленки исследованы с помощью РФА, СЭМ, оптической микроскопии и спектрофотометрии.In the work, sedimentation-stable sols of indium (III) and tin (IV) hydroxides were obtained by the Anion Resin Exchange Precipitation, which consists of the exchange reaction between the OH ions of the anion exchange resin and the anions of metal-containing solutions. The synthesized hydrosols were used to obtain conducting films of indium (III) In2O3 oxide and indium oxide doped with Tin In2O3: Sn, with a surface resistance of 4 kOhm/sq, thicknesses of 200-500 urn and a transparency of more than 85 %. The modes of applying precursors to glass substrates by the modified spray method and centrifugation method are selected. Films were studied using XRD, SEM, optical microscopy and spectrophotometry.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Baron F. A., Mikhlin, Yurii L., Molokeev M. S., Rautskiy M. V., Tarasov I. A., Volochaev M. N., Shanidze L. V., Lukyanenko A. V., Smolyarova T. E., Konovalov, Stepan O., Zelenov, Fyodor, V, Tarasov A. S., Volkov N. V.
Заглавие : Structural, optical, and electronic properties of Cu-doped TiNxOy grown by ammonothermal atomic layer deposition
Коллективы : RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science [20-42-240013]; Government of the Russian Federation for Creation of World Tier Laboratories [075-15-2019-1886]
Место публикации : ACS Appl. Mater. Interfaces. - 2021. - Vol. 13, Is. 27. - P.32531-32541. - ISSN 1944-8244, DOI 10.1021/acsami.1c08036. - ISSN 1944-8252(eISSN)
Примечания : Cited References: 69. - This research was funded by the RFBR, Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science (project code 20-42-240013) and by the grant of the Government of the Russian Federation for Creation of World Tier Laboratories (contract no. 075-15-2019-1886)
Предметные рубрики: OXYNITRIDE THIN-FILMS
TITANIUM-NITRIDE
CONFORMAL TIN
Аннотация: Copper-doped titanium oxynitride (TiNxOy) thin films were grown by atomic layer deposition (ALD) using the TiCl4 precursor, NH3, and O2 at 420 °C. Forming gas was used to reduce the background oxygen concentration and to transfer the copper atoms in an ALD chamber prior to the growth initiation of Cu-doped TiNxOy. Such forming gas-mediated Cu-doping of TiNxOy films had a pronounced effect on their resistivity, which dropped from 484 ± 8 to 202 ± 4 μΩ cm, and also on the resistance temperature coefficient (TCR), which decreased from 1000 to 150 ppm °C–1. We explored physical mechanisms causing this reduction by performing comparative analysis of atomic force microscopy, X-ray photoemission spectroscopy, X-ray diffraction, optical spectra, low-temperature transport, and Hall measurement data for the samples grown with and without forming gas doping. The difference in the oxygen concentration between the films did not exceed 6%. Copper segregated to the TiNxOy surface where its concentration reached 0.72%, but its penetration depth was less than 10 nm. Pronounced effects of the copper doping by forming gas included the TiNxOy film crystallite average size decrease from 57–59 to 32–34 nm, considerably finer surface granularity, electron concentration increase from 2.2(3) × 1022 to 3.5(1) × 1022 cm–3, and the electron mobility improvement from 0.56(4) to 0.92(2) cm2 V–1 s–1. The DC resistivity versus temperature R(T) measurements from 4.2 to 300 K showed a Cu-induced phase transition from a disordered to semimetallic state. The resistivity of Cu-doped TiNxOy films decreased with the temperature increase at low temperatures and reached the minimum near T = 50 K revealing signatures of the quantum interference effects similar to 2D Cu thin films, and then, semimetallic behavior was observed at higher temperatures. In TiNxOy films grown without forming gas, the resistivity decreased with the temperature increase as R(T) = – 1.88T0.6 + 604 μΩ cm with no semimetallic behavior observed. The medium range resistivity and low TCR of Cu-doped TiNxOy make this material an attractive choice for improved matching resistors in RF analog circuits and Si complementary metal–oxide–semiconductor integrated circuits.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrov K. S., Khrustalev B. P., Krivomazov S. N., Петров, Михаил Иванович, Vasilyev A. D., Zwegintsev S. A.
Заглавие : Superconductivity near liquid nitrogen temperature in the Sn-Ba-Sr-Y-Cu-O system
Место публикации : Physica C-Superconductivity and its Applications. - 1989. - Vol. 161, Is. 4. - P.493-496. - ISSN 0921-4534, DOI 10.1016/0921-4534(89)90087-7
Ключевые слова (''Своб.индексиров.''): ceramic materials--tin compounds--bulk superconductivity--high temperature superconductors--oxide superconductors--tin barium strontium yttrium copper oxide--superconducting materials
Аннотация: A high-Tc phase was found in the Sn-Ba-Sr-Y-Cu-O system. DC susceptibility data of Sn2Ba2Sr0.5Y0.5Cu3Ox show a single transition to bulk superconductivity with an onset temperature of 86 K. В© 1989.
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